Horse-boot upper



FIG. 1 is a perspective view of a horse-boot upper showing my design, the sole shown in broken line not being part of the design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left-side elevational view thereof, the right-side view being the mirror image of the left-side view;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a top plan view thereof, the blank top portion of the sole contained within the broken line not being part of the upper design. 

The ornamental design of a horse-boot upper, as shown and described. 